Laws and Principles

Question 1

states that the buoyant force experienced by an object is exactly equal to the weight of the fluid displaced

Answer 1

Archimedes’ principle

Question 2

states that the energy gained (or lost) by a system is equal to the energy lost (or gained) by its surroundings

Answer 2

first law of thermodynamics

Question 3

the velocity of an object does not change unless the object is acted upon by an external force

Answer 3

first law of motion

Question 4

unlike poles attract, but like poles repel

Answer 4

law of magnetic poles

Question 5

states that the current flowing through a conductor is directly proportional to the voltage and inversely proportional to the resistance

Answer 5

Ohm’s law

Question 6

states that if the pressure of a gas is constant, its volume and temperature are directly proportional

Answer 6

Charles’s law

Question 7

the most commonly accepted evolutionary view of the origin of the matter and energy of the universe

Answer 7

big bang theory

Question 8

proposes that gravity is a result of the geometry of space

Answer 8

general theory of relativity

Question 9

states that the universe is lawful, orderly, and operates according to physical laws

Answer 9

principle of causality

Question 10

states that lateral pressure exerted by a moving fluid decreases as the fluid’s speed decreases

Answer 10

Bernoulli’s principle

Question 11

says that when equilibrium is disturbed, the system will react to at least partially offset the disturbance

Answer 11

Le Chatelier’s principle

Question 12

relates the force needed to deform a solid and the amount of deformation

Answer 12

Hooke’s Law